I have a brandnew nook that came with v1.3, I immedately updated it to v1.4, over the last couple of days, I did notice it was locked up tight twice and I had to hold the power button for long to awake it, and it also crashed a couple of times and I had to do a hard reset. I am not sure if this is a v1.4 issue and not sure how exactly to go back to v1.3.